Special pad for self-stabilizing prefabricated pipeline cross reinforcement

Abstract

The invention discloses a special cushion block for crossed steel bars of self-stabilized prefabricated pipelines. The special cushion block comprises a crossed plate which forms a first side, a second side, a third side and a fourth side by taking a crossed position as a boundary. Triangular connecting plates, namely a first connecting plate, a second connecting plate, a third connecting plate and a fourth connecting plate sequentially, are arranged at the outer ends of the first side, the second side, the third side and the fourth side downwardly and integrally respectively. The four connecting plates are downwardly and integrally provided with rectangular clamping hole plates which are a first clamping hole plate, a second clamping hole plate, a third clamping hole plate and a fourth clamping hole plate sequentially. Each of the four clamping hole plates is provided with a clamping hole, a flare with the wide end down, communicated with the corresponding clamping hole, is formed in the corresponding clamping hole plate below the clamping hole, and the height between the first clamping hole plate and the third clamping hole plate is larger than that between the second clamping hole plate and the fourth clamping hole plate. The special cushion block for the crossed steel bars of the self-stabilized prefabricated pipelines has the advantages that the cushion block can be clamped at the crossed position of the steel bars conveniently without binding, so that the situation that two crossed steel bars are just perpendicular to each other can be guaranteed, cushion block and steel bar connecting firmness degree is increased, cushion block displacement is avoided and safety and reliability in use are achieved; the cushion block is light and high in structural strength.

Description

technical field [0001] The invention relates to the technical field of construction, in particular to the control of the protective layer of crossed steel bars placed vertically in a reinforced concrete prefabricated pipeline and the fixing of cushion blocks. Background technique [0002] Reinforced concrete pipe, as a pipe with many advantages such as reliable technology, convenient use, large pipe diameter, large bearing capacity, and suitable for complex underground environments, has been widely used in urban sewage, rainwater, underground tunnels and other underground structures. Existing reinforced concrete pipelines are generally prefabricated in factories, and after the prefabrication is completed, they are transported to the construction site for installation. [0003] When the pipeline is prefabricated, it is necessary to use cross steel bars as the skeleton of the pipeline, and the overall shape of these steel bars is circular in the horizontal section. At the int...

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Problems solved by technology

[0004] In the process of pipeline prefabrication, there are often problems such as no protective layer for the steel reinforcement of the pipeline, the protective layer does not meet the design requirements, the exposed reinforcement pads, and the difficulty of binding and fixing the pads.

Traditional pads generally need to be bound and fixed on the steel bar with matching iron wire or other ropes, and generally only one steel bar is fixed, and it is easy to shift after fixing, and it is difficult to tie and fix, which cannot solve such problems

[0005] In order to ensure that the protective layer of steel bars meets the design requirements, improve the production quality of pipelines, facilitate the binding and fixing of steel bar pads, and improve the use quality of pads, we have developed "self-stabilizing prefabricated pipeline cross reinforcement special pads". The use of pads can effectively solve the problems of pad binding and fixing difficulties, deflection of pads after pressure, difficulty in installation, and easy mistakes in the binding position of pads, etc.

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